Plastic knife



FIG. 1 is a perspective view of the knife;

FIG. 2 is a top elevational view of the knife;

FIG. 3 is an elevational view of the right-hand side of the knife, the left hand side being a mirror image thereof;

FIG. 4 is a back elevational view of the knife;

FIG. 5 is a front elevational view of the knife;

FIG. 6 is a bottom elevational view of the knife;

FIG. 7 is a cross-sectional view of the knife taken along the line 7--7 of FIG. 3; and,

FIG. 8 is a cross-sectional view of the knife taken along the line 8--8 of FIG. 3. 

The ornamental design for a plastic knife, as shown. 